/Engine/Source/Editor/BlueprintGraph/Classes/K2Node_PromotableOperator.h
The promotable operator node allows for pin types to be promoted to others, i.e. float to double
class UK2Node_PromotableOperator : public [UK2Node_CallFunction](API\Editor\BlueprintGraph\UK2Node_CallFunction), public [IK2Node_AddPinInterface](API\Editor\BlueprintGraph\IK2Node_AddPinInterface)